Numbering-machine plunger.



No 850,894. PATENTED APR. 23, 1907.

- as. BATES. NUMBERING MACHINE PLUNGER;

APPLICATION FILED MAY 21, 1906.-

Attest: I Q I Invehtor.

W' b Eaw/rv GBATES m awmw fi 1n: NORRIS Pz'rlls co, WASHINW, n. c.

0 limits the oscillation of the plunger.

UNITED STATES PATENT OFFICE.

EDWIN G. BATES, OF NEW YORK, N. Y., ASSIGNOR TO THE BATES MACHINE COMPANY, A CORPORATION OF NEW JERSEY.

NUMBERING-MACHINE PLUNGER.

Specification of Letters Patent.

iatented April 23, 1907.

To (Li/Z whom, it may concern.-

Be it known that I, EDWIN G. BATES, a citizen of the United States, residing at New York city, New York, have invented certain new and useful Improvements in Numbering-Machine Plungers, of which the following is a clear, full, and exact description.

The object of this invention is to provide a simple, efficient, and convenient means for operating the pawl-plate of plunger-operated typographic numbering-machines which will enable the ready removal of the plunger and the disengagement of its engaging means from the pawl-plate and frame of the machine.

In carrying out this invention I provide the usual numberingmachine frame and pawl-plate, together with a plunger having a guide rod or rods capable of limited reciprocation in the frame, and I provide, preferably, an engaging means carried by a guiderod for operatively engaging the pawl-plate. I provide a means for locking the plunger in place, so that it will have a certain definite movement, which means is preferably made operative or inoperative by the same act which permits engagement or disengagement of the plunger with or from the pawl-plate. I prefer to secure this result by providing a right-angled slot through the wall of the frame and communicating with the guide for a guide-rod of the plunger and by making the guide-rod or part of it rotatable, so that it may be rotated to cause an engaging pin carried by the rod to be radially moved to occupy a position through the wall to engage the rack-plate or to occupy a position in a channel entirely within the frame and open to the top thereof which will allow it to be projected outside of the frame for the removal of the plunger. By the same action of disengaging the pin from the plate I cause a notched part of the rod to automatically unlock a retaining means which ordine tlriliy s automatic means I prefer to construct as a pivoted plate fitting into the notch of the rod or rods, so that upon the oscillation of a rod the unnotched eriphery of the rod will move the plate out o the notch that the spring of the plunger may eject the same.

My invention will be set forth in the claims.

In the accompanying drawings, Figure 1 partly in section, of the rotatable guide-rod... As shown in the drawings, the plungerhead 1 is provided with two guide-rods 2 3, guiderod 2 being permanently secured to the head and guide-rod 3 being journaled in a bushing 15, secured to the head, which head may be formed with a recess to enable a screw 16 to secure the post 3 in vertical position in the head. The guide-rod 3 is formed of a part 11, having an oblique lower end 12. A notch 20 is located above the end 12. A

pin 4 extends at right angles to the axis of the rod, while an upper part 14 extends through the bushing15 and is secured by the screw 16. The frame 10 of the machine is provided with two guide channels or recesses for the rods 2 and 3, between which is a recess for a spring 9, which normally tends to move the plunger away from the frame.

I prefer to form a transverse slot 17 in the frame at right angles to the position occupied .85 least a part of the guide channels or recesses, I

In the slot 17 I mount a lock- 1 by the rods 2 and 3, which slot opens into at for such rods. ing-blade 1'8, securing it by a pivot 21 and attaching to the frame a spring 19, which tends always to move the blade inward.

The pawl-plate 7 is pivoted freely upon the main shaft 8, as in most machines of this character, and is provided with a.slot which may be engaged by the pin 4 of the plunger guide-rod. This slot is preferably formed in the edge of the pawl-plate.

I provide a vertical opening extending Fig. 4 is a transverse section on from the top of the machine-frame down- I wardly and opening at one end to the guidechannel for the rotatable rod 3 which opening 13 terminates in an opening orslot 5 at right angles to itself which passes through the wall of the frame. The inner end of the slot 5 thus formed is open to a vertical opening 6, extending upward and through into the guide for the rod 3, but closed at the top,

which closed top forms an abutment.

In operation to assemble the machine the rotatable rod 3 is rotated as by a screwdriver engaging the slotted head 16, so that the pin 4 will be parallel with the slot 13, when the entire plunger will be forced down until the notches 20 are opposite to the locking-blade 18. Then the screw 16 will be turned, and with it the rotatable post, so that the pin 4 will be protruded through the opening 5 and into the slot of the pawl-plate 7. Upon releasing the plunger-head the spring 9 will raise it until the pin 4 is stopped by the closed end of the vertical slot 6. In doing so the pin 4 will of course swing the pawlplate to the right, as shown in Fig. 1, to operate the number-wheel mechanism. (Not shown.) When compressed as in printing, the plunger in moving into the frame will rotate the plate 7 in the contrary direction, as will be obvious. To remove the plunger, it will only be necessary to insert a screw driver in the slotted head 16, depress the plunger-head to the bottom of the stroke, and turnthe rotatable rod until the pin is parallel with the opening 13, and withdraw the driver and all pressure, when the spring 9 will eject the plunger.

I claim as my invention- 1. A numbering-machine frame, a pawlplate provided with a slot, in combination with a plunger, a guide-rod therefor, a

spring, said frame having a recess for said rod, and having an opening through the same substantially at right angles to the recess, a pin on said rod engaging said slot in the plate, said opening being closed at the top, and means to rotate said pin in a hori- Zontal plane with said rod as the axis.

' 2. A numbering-machine frame, a pawlplate provided with a slot, in combination with a plunger, a guide-rod therefor, a spring, said frame provided with a recess for said rod, and having an opening through the frame substantially at right angles to the recess, a pin on said rod engaging said slot in the plate, said opening being closed at the top, means to rotate said pin, said means comprising a rotatable stud acting on said guide-rod.

3. A numbering-machine frame, a pawlplate, in combination with a plunger having a guide-rod in the frame, said rod carrying an engaging means for operatively engaging the pawl-plate, said guide-rod being rotatable and adapted upon its rotation to engage or disengage said engaging means from the pawl-plate.

4. A numbering-machine having a frame, a pawl-plate, a plunger and means connecting the pawl-plate and plunger, in combination with a notched guide-rod in said frame, a locking means in the frame and engaging the notch of the rod, said rod being rotatable and adapted upon its rotation to automatically release the locking means.

5. A numbering-machine frame, a pawlplate, in combination with a plunger having a guide-rod in the frame, said rod carrying an engaging means for operatively engaging the pawl-plate, said guide-rod being rotatable and adapted upon its rotation to engage or disengage said engaging means from the plunger, a locking means in the frame and engaging a notch in the guide-rod, and means for automatically disengaging the locking means upon the rotation of the rod.

6. A numbering-machine frame, a pawlplate provided wth a slot, in combination with a plunger, a spring, said frame having a substantially closed recess for said plunger, and having an opening through the frame substantially at right angles to said recess, a pin ,on said plunger engaging said slot in the plate, in eombmatlon with means for 1nserting the plunger into the case with the pin below its surface and at least partially within the case and in position where it may be caused to engage the pawl-swing slot, said pin being located normally below said surface of the case.

Signed at New York city this 19th day of May, 1906.

EDWIN G. BATES.

Witnesses:

B. B. CONRAD, CARRIE E. WYLIE. 

